All food chains begin with a .
a- producers
b- scavengers
c- primary consumer
d- secundary consumer

What are some aquatic organisms that live in cold water temperatures?

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

Which term describes a normal value for something in the body? a.homeostasis b.set point c.feedback loop d.integration center